Re: [DNSOP] Possible slower response with minimization

[Doug Barton <[e-mail]>]

On 10/20/14 2:03 PM, Bob Harold wrote:
> I support the idea of qname minimization, but I think there is a common
> case where it will cause additional DNS round trips, slowing the
> response and increasing the number of packets and queries the servers
> must handle.
>
> Consider “www.host.group.department.example.com

Your analysis is correct, but only for a cold cache. Once the resolver 
has cached the NS records for group.department.example.com the penalty 
no longer applies.

One thing that may be a worthwhile consideration though is a way to 
cache that host.group.... is not a zone cut. That would further reduce 
the penalty.

FWIW, I also have some concerns about empty non-terminals, but none of 
that slows me down in terms of supporting WG adoption. I think it's a 
worthy idea, and I'll do what I can to help.

Doug